{"product_id":"radiomaster-ers-rc01-cdi-gas-engine-tachometer-for-compatible-expresslrs-pwm-receivers","title":"RadioMaster ERS-RC01 - CDI Gas Engine Tachometer for Compatible ExpressLRS PWM Receivers","description":"\u003cspan style=\"font-size:20px;\"\u003e\u003cstrong\u003eRadioMaster ERS-RC01 - CDI Gas Engine Tachometer for Compatible ExpressLRS PWM Receivers\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\n \n\u003cp style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin: 0px 0px 25px; color: rgb(28, 29, 29); font-family: Arimo, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.4px; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003eThe ERS-RC01 Gasoline Engine Tachometer measures RPM by connecting directly to your engine's CDI speed output. The sensor accurately detects engine speed, transmits the data to a compatible ExpressLRS receiver through the CRSF interface, and then sends it back to your EdgeTX radio for real-time monitoring. Ideal for any application requiring accurate RPM feedback.\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin: 0px 0px 25px; color: rgb(28, 29, 29); font-family: Arimo, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.4px; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003eAs part of the ERS sensor family, the ERS-RC01 also supports pass-through expansion, allowing easy daisy-chaining with additional telemetry modules.\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin: 0px 0px 25px; color: rgb(28, 29, 29); font-family: Arimo, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.4px; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; text-align: start;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg alt=\"ERS-RC01 - CDI Gas Engine Tachometer for Compatible ExpressLRS PWM Receivers\" cke-id=\"img32\" referrerpolicy=\"no-referrer\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/1_288a2611-bcc0-4f33-b782-dd2529c62190.jpg?v=1769581793\" style=\"box-sizing: border-box; border: 0px none; outline-color: rgb(0, 0, 255); max-width: 100%; margin: 0px; height: auto; float: none;\"\u003e\u003c\/div\u003e\u003cspan style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255);\"\u003e\u003cbr\u003e\n\u003cbr\u003e\n\u003cspan style=\"font-size:18px;\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\n\n\u003cul style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin: 0px 0px 25px 30px; padding: 0px; text-rendering: optimizelegibility; color: rgb(28, 29, 29); font-family: Arimo, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.4px; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003e\n\u003cstrong style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); font-weight: 700;\"\u003eAccurate Engine RPM:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMonitors gasoline engine speed in real time with precision.\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003e\n\u003cstrong style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); font-weight: 700;\"\u003eExpressLRS Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSends RPM data directly to compatible ExpressLRS receivers via the CRSF interface.\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003e\n\u003cstrong style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); font-weight: 700;\"\u003eVersatile Applications:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIdeal for any application requiring accurate RPM feedback.\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003e\n\u003cstrong style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); font-weight: 700;\"\u003eCompact \u0026amp; Lightweight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEasy to install without adding unnecessary weight.\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003e\n\u003cstrong style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); font-weight: 700;\"\u003ePlug-and-Play:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSimple connection to the CDI output for fast setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003e\u003cspan style=\"font-size:18px;\"\u003e\u003cstrong style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); font-weight: 700;\"\u003e\u003cspan style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255);\"\u003ePlug and Play Compatible Receivers:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cul\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003e\n\u003cspan style=\"font-size:18px;\"\u003e\u003cstrong style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); font-weight: 700;\"\u003e\u003cspan style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255);\"\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"font-size:16px;\"\u003eER6 2.4GHz ExpressLRSPWM Receiver\u003c\/span\u003e\n\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003e\u003cspan style=\"font-size:16px;\"\u003eER8 2.4GHz ExpressLRSPWM Receiver\u003c\/span\u003e\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003e\n\u003cspan style=\"font-size:16px;\"\u003eER8G \u0026amp; ER8GV ExpressLRS PWM Receiver\u003c\/span\u003e\u003cspan style=\"font-size:18px;\"\u003e\u003cstrong style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); font-weight: 700;\"\u003e\u003cspan style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255);\"\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003e\u003cspan style=\"font-size:18px;\"\u003e\u003cstrong\u003e\u003cspan style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255);\"\u003eUsing Sensors with Non-Plug-and-Play PWM ExpressLRS Receivers:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cspan style=\"font-size:18px;\"\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\n\n\u003cp style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin: 0px 0px 25px; color: rgb(28, 29, 29); font-family: Arimo, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.4px; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cspan style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255);\"\u003eMost PWM ExpressLRS receivers are fully compatible; those without a dedicated UART port require reconfiguration to support external sensors (e.g., for telemetry). To enable this, reassign two PWM output pins as a serial UART—one for TX and one for RX—via the receiver's Web UI (accessed by putting the receiver into WiFi mode) or via the ExpressLRS LUA script. This enables sensor connectivity while preserving the remaining PWM channels for servos or ESCs.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin: 0px 0px 25px; color: rgb(28, 29, 29); font-family: Arimo, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.4px; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cspan style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255);\"\u003eFor receivers that only provide standard servo pins, an optional adapter cable is available that converts the sensor’s UART connector to two standard servo plugs (TX and RX). Available here:\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/radiomasterrc.com\/products\/ers-sensor-uart-to-dual-pwm-adapter\" rel=\"noopener\" style=\"box-sizing: border-box; border-color: rgb(229, 231, 235) rgb(229, 231, 235) rgba(28, 29, 29, 0.15); outline-color: rgb(0, 0, 255); color: rgb(28, 29, 29); text-decoration: none; background: transparent; border-bottom-width: 1px; border-bottom-style: solid; position: relative; display: inline-block;\" target=\"_blank\"\u003ehttps:\/\/radiomasterrc.com\/products\/ers-sensor-uart-to-dual-pwm-adapter\u003c\/a\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255);\"\u003e\u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eSensor Configuration \u0026amp; Telemetry Logging\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin: 0px 0px 25px; color: rgb(28, 29, 29); font-family: Arimo, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.4px; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cspan style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255);\"\u003eTo configure this sensor and view telemetry on your EdgeTX radio, install the RadioMaster Sensor Configurator LUA. The LUA allows adjustment of sensor settings, enables proper telemetry display, and supports data logging for post-flight review.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin: 0px 0px 25px; color: rgb(28, 29, 29); font-family: Arimo, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.4px; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cspan style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255);\"\u003eAfter downloading, connect your radio to a Mac or PC in USB-SD mode.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin: 0px 0px 25px; color: rgb(28, 29, 29); font-family: Arimo, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.4px; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cspan style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255);\"\u003eCopy the LUA files to:\u003cbr style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255);\"\u003e\n\/SCRIPTS\/TOOLS\/\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin: 0px 0px 25px; color: rgb(28, 29, 29); font-family: Arimo, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.4px; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cspan style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255);\"\u003e👉\u003ca href=\"http:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/SENSOR_LUA_2026_7_31.zip?v=1785485572\" rel=\"noopener\" style=\"box-sizing: border-box; border-color: rgb(229, 231, 235) rgb(229, 231, 235) rgba(28, 29, 29, 0.15); outline-color: rgb(0, 0, 255); color: rgb(28, 29, 29); text-decoration: none; background: transparent; border-bottom-width: 1px; border-bottom-style: solid; position: relative; display: inline-block;\" target=\"_blank\"\u003eDownload the RadioMaster ERS Sensors Configurator.lua\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin: 0px 0px 25px; color: rgb(28, 29, 29); font-family: Arimo, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.4px; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg alt=\"ERS-RC01 - CDI Gas Engine Tachometer for Compatible ExpressLRS PWM Receivers\" cke-id=\"img33\" referrerpolicy=\"no-referrer\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/RM_Sensor_Configurator_LUA_Main.jpg?v=1769742102\" style=\"box-sizing: border-box; border: 0px none; outline-color: rgb(0, 0, 255); max-width: 100%; margin: 0px; height: auto; float: none;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg alt=\"ERS-RC01 - CDI Gas Engine Tachometer for Compatible ExpressLRS PWM Receivers\" cke-id=\"img34\" referrerpolicy=\"no-referrer\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/RM_Sensor_Configurator_LUA_Sensor_view.jpg?v=1769742102\" style=\"box-sizing: border-box; border: 0px none; outline-color: rgb(0, 0, 255); max-width: 100%; margin: 0px; height: auto; float: none;\"\u003e\u003c\/div\u003e\n\n\u003cp style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin: 0px 0px 25px; color: rgb(28, 29, 29); font-family: Arimo, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.4px; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; text-align: start;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg alt=\"ERS-RC01 - CDI Gas Engine Tachometer for Compatible ExpressLRS PWM Receivers\" cke-id=\"img35\" referrerpolicy=\"no-referrer\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/2_7b0375fa-6f1d-4159-b68f-985434897fe8.jpg?v=1769581793\" style=\"box-sizing: border-box; border: 0px none; outline-color: rgb(0, 0, 255); max-width: 100%; margin: 0px; height: auto; float: none;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg alt=\"ERS-RC01 - CDI Gas Engine Tachometer for Compatible ExpressLRS PWM Receivers\" cke-id=\"img36\" referrerpolicy=\"no-referrer\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/3_2366e714-cab7-49cc-a81a-dfc65e91919e.jpg?v=1769581793\" style=\"box-sizing: border-box; border: 0px none; outline-color: rgb(0, 0, 255); max-width: 100%; margin: 0px; height: auto; float: none;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg alt=\"ERS-RC01 - CDI Gas Engine Tachometer for Compatible ExpressLRS PWM Receivers\" cke-id=\"img37\" referrerpolicy=\"no-referrer\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/4_b5c6caac-43a4-40f7-b181-0b716d4cc4f6.jpg?v=1769581793\" style=\"box-sizing: border-box; border: 0px none; outline-color: rgb(0, 0, 255); max-width: 100%; margin: 0px; height: auto; float: none;\"\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cimg alt=\"ERS-RC01 - CDI Gas Engine Tachometer for Compatible ExpressLRS PWM Receivers\" cke-id=\"img38\" referrerpolicy=\"no-referrer\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/8_410bb7f1-a77f-48eb-a8ac-730ef0ab0d54.jpg?v=1769581793\" style=\"box-sizing: border-box; border: 0px none; outline-color: rgb(0, 0, 255); max-width: 100%; margin: 0px; height: auto; float: none;\"\u003e\u003c\/div\u003e\u003cspan style=\"font-size:18px;\"\u003e\u003cstrong\u003e\u003cspan style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255);\"\u003eSpecifications\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\n\n\u003cul style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin: 0px 0px 25px 30px; padding: 0px; text-rendering: optimizelegibility; color: rgb(28, 29, 29); font-family: Arimo, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.4px; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003eItem: ERS-RC01 RPM-CDI Sensor\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003eOperating voltage: 5–8.4V\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003eOperating current: 8mA\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003eConnector type: 3 pin\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003eSupported: CDI gasoline ignition\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003eRange: 200–300, 000RPM\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003eAccuracy: ±0.1%\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003eTemperature range: –10 ℃ to +85 ℃\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003eSize: 28 × 12 × 8mm\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003eWeight: 6.0g\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003e\u003cspan style=\"font-size:18px;\"\u003e\u003cstrong\u003eDownload\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cul style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin: 0px 0px 25px 30px; padding: 0px; text-rendering: optimizelegibility; color: rgb(28, 29, 29); font-family: Arimo, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.4px; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003e\u003ca href=\"http:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/ERS-RC01-1.3.pdf?v=1769666378\" rel=\"noopener\" style=\"box-sizing: border-box; border-color: rgb(229, 231, 235) rgb(229, 231, 235) rgba(28, 29, 29, 0.15); outline-color: rgb(0, 0, 255); color: rgb(28, 29, 29); text-decoration: none; background: transparent; border-bottom-width: 1px; border-bottom-style: solid; position: relative; display: inline-block;\" target=\"_blank\"\u003eERS-RC01 User Manual\u003c\/a\u003e\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003e\u003ca href=\"http:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/SENSOR_LUA_2026_7_31.zip?v=1785485572\" rel=\"noopener\" style=\"box-sizing: border-box; border-color: rgb(229, 231, 235) rgb(229, 231, 235) rgba(28, 29, 29, 0.15); outline-color: rgb(0, 0, 255); color: rgb(28, 29, 29); text-decoration: none; background: transparent; border-bottom-width: 1px; border-bottom-style: solid; position: relative; display: inline-block;\" target=\"_blank\"\u003eRadioMaster ERS Sensors Configurator.lua\u003c\/a\u003e\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003e\u003ca href=\"http:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/RM_ERS_Sensor-v1.3-updata.bin?v=1780640563\" rel=\"noopener\" style=\"box-sizing: border-box; border-color: rgb(229, 231, 235) rgb(229, 231, 235) rgba(28, 29, 29, 0.15); outline-color: rgb(0, 0, 255); color: rgb(28, 29, 29); text-decoration: none; background: transparent; border-bottom-width: 1px; border-bottom-style: solid; position: relative; display: inline-block;\" target=\"_blank\"\u003eERS Series Sensors Firmware V1.3\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003e\u003cspan style=\"font-size:18px;\"\u003e\u003cstrong\u003e\u003cspan style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255);\"\u003eSize\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cp style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin: 0px 0px 25px; color: rgb(28, 29, 29); font-family: Arimo, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.4px; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; text-align: start;\"\u003e\u003cimg alt=\"ERS-RC01 - CDI Gas Engine Tachometer for Compatible ExpressLRS PWM Receivers\" cke-id=\"img39\" referrerpolicy=\"no-referrer\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/5_c9488ddd-1693-438c-a849-732282a8e361_480x480.jpg?v=1769582043\" style=\"box-sizing: border-box; border: 0px none; outline-color: rgb(0, 0, 255); max-width: 100%; margin: 0px; height: auto; float: none;\"\u003e\u003cbr\u003e\n\u003cspan style=\"font-size:18px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin: 0px 0px 25px; color: rgb(28, 29, 29); font-family: Arimo, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.4px; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cimg alt=\"ERS-RC01 - CDI Gas Engine Tachometer for Compatible ExpressLRS PWM Receivers\" cke-id=\"img40\" referrerpolicy=\"no-referrer\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/lQDPJwxghyZwzp_NA-jNAu6wjUA3ou6t1BIJUqBa-coPAA_750_1000_480x480.jpg?v=1769595476\" style=\"box-sizing: border-box; border: 0px none; outline-color: rgb(0, 0, 255); max-width: 100%; margin: 0px; height: auto; float: none;\"\u003e\u003cbr\u003e\n\u003cspan style=\"font-size:18px;\"\u003e\u003cstrong\u003ePackage Includes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin: 0px 0px 25px 30px; padding: 0px; text-rendering: optimizelegibility; color: rgb(28, 29, 29); font-family: Arimo, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.4px; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003e1 * ERS-RC01 RPM-CDI Sensor\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003e3 * Heat-Shrinkable Tube\u003c\/li\u003e\n\t\u003cli style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin-bottom: 0px;\"\u003e1 * Manual QR Code Card\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp style=\"box-sizing: border-box; border-color: rgb(229, 231, 235); outline-color: rgb(0, 0, 255); margin: 0px 0px 25px; color: rgb(28, 29, 29); font-family: Arimo, sans-serif; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: 0.4px; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cimg alt=\"ERS-RC01 - CDI Gas Engine Tachometer for Compatible ExpressLRS PWM Receivers\" cke-id=\"img41\" referrerpolicy=\"no-referrer\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/7_c2fef2ff-9838-42b7-ba73-36ca10086772.jpg?v=1769581794\" style=\"box-sizing: border-box; border: 0px none; outline-color: rgb(0, 0, 255); max-width: 100%; margin: 0px; height: auto; float: none;\"\u003e\u003c\/div\u003e\n","brand":"RC FPV Drone Store","offers":[{"title":"Default Title","offer_id":49077248295030,"sku":"ACZ2217","price":17.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0671\/2301\/9894\/files\/a2201970811b39e4207fa23ea6012175.jpg?v=1792487132","url":"https:\/\/rcfpvdrone.com\/zh\/products\/radiomaster-ers-rc01-cdi-gas-engine-tachometer-for-compatible-expresslrs-pwm-receivers","provider":"RC FPV Drone Store","version":"1.0","type":"link"}